@iface_config = ();
push @iface_config, "ovs_type OVSIntPort";
push @iface_config, "ovs_bridge $bridge";
+ push @iface_config, "ovs_mtu $mtu" if $mtu;
push @iface_config, "ovs_options vlan_mode=dot1q-tunnel tag=$stag other_config:qinq-ethtype=$vlanprotocol";
push(@{$config->{$svlan_iface}}, @iface_config) if !$config->{$svlan_iface};